Hadith 4:895
Waki’ narrated to us, from ‘Asim ibn Muhammad, from his father, who said: When Ibn ‘Umar would see the people and what they were preparing for Rajab, he would dislike that.
حدثنا وكيع عن عاصم بن محمد عن أبيه قال كان بن عمر إذا رأى الناس وما يعدون لرجب كره ذلك