The Prophet (ﷺ) fasted Al-Wisal on the last days of the month. Some people did the same, and when the news reached the Prophet (ﷺ) he said, "If the month had been prolonged for me, then I would have fasted Wisal for such a long time that the most exaggerating ones among you would have given up their exaggeration. I am not like you; my Lord always makes me eat and drink."
Sahih al-Bukhari Book 94, Hadith 16
← Previous Hadith Allah's Messenger (ﷺ) said, "Were I not afraid that it would be hard on my followers, I would order them to use the siwak (as obligatory, for cleaning the teeth).

Sahih al-Bukhari Book 94, Hadith 15 Next Hadith → Allah's Messenger (ﷺ) forbade Al-Wisal. The people said (to him), "But you fast Al-`Wisal," He said, "Who among you is like me? When I sleep (at night), my Lord makes me eat and drink. But when the people refused to give up Al-Wisal, he fasted Al-Wisal along with them for two days and then they saw the crescent whereupon the Prophet (ﷺ) said, "If the crescent had not appeared I would have fasted for a longer period," as if he intended to punish them herewith.

Sahih al-Bukhari Book 94, Hadith 17