'Umar said: I never asked the Messenger of Allah ﷺ about anything more than I asked him about kalalah, until he poked me in the chest with his finger and said: ʿIs not ayatus-saif (the verse of summer, i.e., it was revealed in summer), which appears at the end of Sooratan-Nisa', sufficient for you?”
قَالَقَالَ عُمَرُ مَا سَأَلْتُ رَسُولَ اللهِ ﷺ عَنْ شَيْءٍ أَكْثَرَ مِمَّا سَأَلْتُهُ عَنِ الْكَلالَةِ حَتَّى طَعَنَ بِإِصْبَعِهِ فِي صَدْرِي وَقَالَ تَكْفِيكَ آيَةُ الصَّيْفِ الَّتِي فِي آخِرِ سُورَةِ النِّسَاءِ