Narrated 'Aisha:

the mother of the faithful believers: The Prophet was asked by his wives about the Jihad and he replied, "The best Jihad (for you) is (the performance of) Hajj."

حَدَّثَنَا قَبِيصَةُ، حَدَّثَنَا سُفْيَانُ، عَنْ مُعَاوِيَةَ، بِهَذَا. وَعَنْ حَبِيبِ بْنِ أَبِي عَمْرَةَ، عَنْ عَائِشَةَ بِنْتِ طَلْحَةَ، عَنْ عَائِشَةَ أُمِّ الْمُؤْمِنِينَ، عَنِ النَّبِيِّ ﷺ سَأَلَهُ نِسَاؤُهُ عَنِ الْجِهَادِ فَقَالَ
" نِعْمَ الْجِهَادُ الْحَجُّ ".