Hadith #4852 (Sunan Abi Dawud)
Book: General Behavior (Kitab Al-Adab)
Narrator(s): Ibrahim bin Musa al-Razi al-Fara' إبراهيم بن موسى الرازي الفراء, Tmam bin Njyh al-'Asady تمام بن نجيح الأسدي الدمشقي
Grade: Sahih

Abu Salih said: I asked Ibn `Umar: If they are four? He replied: Then it does not harm you.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-4852/