Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
حَدَّثَنَا مُسْلِمٌ، حَدَّثَنَا شُعْبَةُ، عَنْ عَدِيٍّ، عَنْ عَبْدِ اللَّهِ بْنِ يَزِيدَ، سَمِعَ أَبَا مَسْعُودٍ الْبَدْرِيَّ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " نَفَقَةُ الرَّجُلِ عَلَى أَهْلِهِ صَدَقَةٌ ".Narrated Abu Masud Al-Badri:The Prophet (ﷺ) said, "A man's spending on his family is a deed of charity
From Sahih al-Bukhari, whose reports the scholars accept as authentic.