Mishkat al-Masabih 13 Marriage كتاب النكاح 18

وَعَن عَائِشَةَ قَالَتْ: قَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِنَّ أَعْظَمَ النِّكَاحِ بَرَكَةً أَيْسَرُهُ مُؤْنَةً» . رَوَاهُمَا الْبَيْهَقِيّ فِي شعب الْإِيمَان

‘A’isha reported the Prophet as saying, “The marriage which produces most blessing is that which involves least burden.” Baihaqi transmitted in Shu’ab al-iman .