“I once heard Ali ibn al-Husayn, ‘Alayhim al-Salam, saying to his servants (slaves), ‘Do not slaughter any animal before it is dawn because Allah has made the night for everything to rest.’ I then asked him (the Imam) saying, ‘I pray to Allah to keep my soul in service for your cause, what happens if we are afraid?’ He (the Imam) then said, ‘If you are afraid of death then you can slaughter.’”