"When Malik bin Hubairah performed Salat for a funeral and the people were few he would divide them into three groups (rows) then say: 'The Messenger of Allah said: "For whomever three rows perform Salat, then it is granted."
فَتَقَالَّ النَّاسَ عَلَيْهَا جَزَّأَهُمْ ثَلاَثَةَ أَجْزَاءٍ ثُمَّ قَالَ قَالَ رَسُولُ اللَّهِ ﷺ مَنْ صَلَّى عَلَيْهِ ثَلاَثَةُ صُفُوفٍ فَقَدْ أَوْجَبَ قَالَ وَفِي الْبَابِ عَنْ عَائِشَةَ وَأُمِّ حَبِيبَةَ وَأَبِي هُرَيْرَةَ وَمَيْمُونَةَ زَوْجِ النَّبِيِّ ﷺ