Narrated Abu Huraira:

The Prophet ﷺ said (to his companions), "Do not fast Al-Wisal." They said, "But you fast Al-Wisail." He said, "I am not like you, for at night my Lord feeds me and makes me drink." But the people did not give up Al-Wisal, so the Prophet fasted Al-Wisal with them for two days or two nights, and then they saw the crescent whereupon the Prophet ﷺ said, "If the crescent had delayed, I would have continued fasting (because of you)," as if he wanted to vanquish them completely (because they had refused to give up Al Wisal).

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ، حَدَّثَنَا هِشَامٌ، أَخْبَرَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، عَنْ أَبِي سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ النَّبِيُّ ﷺ " لاَ تُوَاصِلُوا ". قَالُوا إِنَّكَ تُوَاصِلُ. قَالَ " إِنِّي لَسْتُ مِثْلَكُمْ، إِنِّي أَبِيتُ يُطْعِمُنِي رَبِّي وَيَسْقِينِي ". فَلَمْ يَنْتَهُوا عَنِ الْوِصَالِ ـ قَالَ ـ فَوَاصَلَ بِهِمُ النَّبِيُّ ﷺ يَوْمَيْنِ أَوْ لَيْلَتَيْنِ، ثُمَّ رَأَوُا الْهِلاَلَ فَقَالَ النَّبِيُّ ﷺ " لَوْ تَأَخَّرَ الْهِلاَلُ لَزِدْتُكُمْ ". كَالْمُنَكِّلِ لَهُمْ.