Sayyiduna Abu Razin Laqit bin Amir Aqili رضي الله عنه said: I asked the Messenger of Allah صلى الله عليه وسلم: O Messenger of Allah! In the days of ignorance, we used to offer sacrifice in the month of Rajab. What is your opinion about this? He said: "There is no harm in slaughtering." (That is, when it is done for Allah, there is no objection to offering sacrifice in any month «كما فى النسائي وغيره» ). Imam Waki’ رحمه الله said: I never abandon this practice.