instead of celebrating, what does Rabiul awwal remind us of

English Bayan No. 304

Hazrat Syed Shabbir Ahmad Kakakhel حفظه الله
Khanqah Rehmkaria Imdadia - H# CB 1991/1 Near Masjid Ameer Hamza RA, Street 4, Allah Abad, Westridge 3, Rawalpindi
instead of celebrating, what does Rabiul awwal remind us of - English Bayaan