Al-Kāfi
Hadith 668- عَنْهُ عَنْ مُعَاوِيَةَ بْنِ عَمَّارٍ فِي امْرَأَةٍ أَوْصَتْ بِمَالٍ فِي عِتْقٍ وَصَدَقَةٍ وَحَجٍّ فَلَمْ يَبْلُغْ قَالَ ابْدَأْ بِالْحَجِّ فَإِنَّهُ مَفْرُوضٌ فَإِنْ بَقِيَ شَيْءٌ فَاجْعَلْهُ فِي الصَّدَقَةِ طَائِفَةً وَفِي الْعِتْقِ طَائِفَةً.
8. It is narrated from the narrator of the previous Hadith from Mu‘awiyah ibn ‘Ammar who has narrated the following: “About the case of a woman who makes a will to set free a slave, pay charity and al-Hajj but there is not enough, he (the Imam) (a.s.), said that first is al-Hajj because it is obligatory and if anything remains extra then spend something on charity and something for setting free a slave.’”