سُنَنُ أَبِي دَاوُدَ
Sunan Abi Dawud 5027
General Behavior (Kitab Al-Adab)
Regarding yawning
حَدَّثَنَا ابْنُ الْعَلاَءِ، عَنْ وَكِيعٍ، عَنْ سُفْيَانَ، عَنْ سُهَيْلٍ، نَحْوَهُ قَالَ فِي الصَّلاَةِ فَلْيَكْظِمْ مَا اسْتَطَاعَ .
The tradition mentioned above has also been transmitted in a similar way by Suhail through a different chain of narrators. This version has; “during prayer, so he should hold as far as possible”.
Sunan Abi Dawud, 5027Sahih (Al-Albani)صحيح (الألباني)