Ibn Abbas (Allah be pleased with them) reported that they (the Arabs of pre-Islamic days) looked upon Umra during the months of Hajj as the greatest of sins on the earth. So they intercalated the month of Muharram for Safar and said:
Reference | : Sahih Muslim 1240a |
In-book reference | : Book 15, Hadith 217 |
USC-MSA web (English) reference | : Book 7, Hadith 2858 |
(deprecated numbering scheme) |