Kāda and its sisters are deficient verbs that govern like kāna: they raise a noun and take a predicate that is always an imperfect verbal clause. Verbs of nearness: kāda, awshaka, karaba. Verbs of hope: ʿasā, ḥarā, ikhlawlaqa. Verbs of beginning: sharaʿa, akhadha, badaʾa, jaʿala, ṭafiqa.
These verbs govern exactly as kāna does, raising a noun and requiring a predicate, with one defining difference: their predicate is never a single word. It is always a verbal sentence with an imperfect verb. They express nearness, hope or beginning, and one of them, when negated, behaves in a way that has occupied commentators for centuries.
They raise their noun and put their predicate in the accusative, but that predicate is always a verbal sentence whose verb is imperfect, occupying the position of accusative.
By the end of this lesson
يَكَادُ الْبَرْقُ يَخْطَفُ أَبْصَارَهُمْ
yakādu l-barqu yakhṭafu abṣārahum
The lightning almost snatches away their sight.
يكادُ فعل مضارع ناقص مرفوع وعلامة رفعه الضمة الظاهرة، البرقُ اسم يكاد مرفوع وعلامة رفعه الضمة الظاهرة، يخطفُ فعل مضارع مرفوع، والفاعل ضمير مستتر تقديره هو، أبصارَ مفعول به منصوب وهو مضاف، وهم ضمير متصل في محل جر مضاف إليه، وجملة يخطف في محل نصب خبر يكاد.
The predicate is the whole clause yakhṭafu abṣārahum, and it is given a position rather than an ending. Writing kāda l-barqu khāṭifan, with a single-word predicate, would be ungrammatical.
Approach, hope, and beginning. The family a verb belongs to predicts whether an will precede the predicate.
عَسَى اللهُ أَنْ يَأْتِيَ بِالْفَتْحِ
ʿasā Llāhu an yaʾtiya bi-l-fatḥi
Perhaps Allah will bring the victory.
عسى فعل ماضٍ ناقص مبني على الفتح المقدر، اللهُ لفظ الجلالة اسم عسى مرفوع، أنْ حرف مصدري ونصب، يأتيَ فعل مضارع منصوب بأن وعلامة نصبه الفتحة الظاهرة، والفاعل ضمير مستتر تقديره هو، والمصدر المؤول في محل نصب خبر عسى.
With ʿasā the an is nearly always present, and it changes the analysis: the predicate is now an infinitival phrase in the position of accusative. Commentators note that ʿasā used of Allah denotes certainty rather than mere hope.
Check yourself
Would an be correct before the predicate here?
شَرَعَ الطَّالِبُ يَكْتُبُ
No. With verbs of beginning, an is forbidden.
Beginning an act and merely intending it are incompatible: an points to something not yet real, while sharaʿa says the act is already under way. So sharaʿa an yaktuba is wrong; sharaʿa yaktubu is correct.
Negating kāda ordinarily denies the nearness. In one famous verse it does the opposite, and the reversal is worth understanding rather than memorising.
فَذَبَحُوهَا وَمَا كَادُوا يَفْعَلُونَ
fa-dhabaḥūhā wa-mā kādū yafʿalūn
So they slaughtered it, though they were near to not doing so.
ذبحوا فعل ماضٍ مبني على الضم لاتصاله بواو الجماعة، وواو الجماعة في محل رفع فاعل، وها ضمير متصل في محل نصب مفعول به، ما نافية، كادوا فعل ماضٍ ناقص، وواو الجماعة في محل رفع اسم كاد، يفعلونَ فعل مضارع مرفوع وعلامة رفعه ثبوت النون، وواو الجماعة في محل رفع فاعل، والجملة في محل نصب خبر كاد.
The verse says they did slaughter it, and yet negates the nearness. The resolution offered by the grammarians is that mā kādū denies the ease and readiness rather than the act: they did it, but only barely and after great reluctance. Hence the maxim that negating kāda affirms and affirming it negates.
Three errors, the first of which is the defining feature of the chapter.
The families, the rulings on an, and the negated kāda follow these texts.
A rule is clearest in a text you already know by heart. Each ayah below contains the very construction this lesson teaches, and every one has a full word-by-word i'rab on this site. Read the ayah first and try to find the construction yourself, then open its i'rab to check.
Common questions
For the same reason as kāna: they raise a noun and require a predicate to complete them. They differ in one respect that defines the chapter: their predicate is never a single word. It is always a verbal sentence whose verb is imperfect, occupying the position of accusative.
No. Writing kāda l-barqu khāṭifan is an error. The predicate must be a verbal sentence with an imperfect verb: kāda l-barqu yakhṭafu. This is the single most useful thing to remember about the chapter.
With ʿasā it is nearly always present. With kāda and karaba it is rare and its absence is the norm. With verbs of beginning, sharaʿa, akhadha, jaʿala, ṭafiqa, it is forbidden, because beginning an act and merely intending it are incompatible ideas.
This is the famous difficulty. Ordinarily negating kāda negates the nearness, so mā kāda yafʿalu means he was far from doing it. In the verse wa-mā kādū yafʿalūn the meaning is that they did do it, but only after great reluctance. Many grammarians therefore say that negating kāda affirms, and affirming it negates.
A verb, though frozen: it has only the past form and does not conjugate for tense. It expresses hope, and in the Quran, when used of Allah, the commentators say it denotes certainty rather than mere hope.
Mostly not. kāda and awshaka have an imperfect; the rest are frozen in the past. That is why you meet yakādu but never a full paradigm for ʿasā or ṭafiqa.