Mishkat al-MasabihChapter 4Hadith 1180
Full Sharh — Mishkat al-Masabih 1180
وَعَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " لِيُصَلِّ أَحَدُكُمْ نَشَاطَهُ وَإِذَا فَتَرَ فَلْيَقْعُدْ)
English Translation
Anas reported God’s Messenger as saying, “One should pray as long as he is lively, but when he slackens he should stop.” (Bukhari and Muslim.)
Source
Mishkat al-Masabih(مشكاة المصابيح)
Prayer
Hadith Number
1180