بسم الله الرحمن الرحيم
(1) It is haram to shave the beard. It is also unlawful and major sin to trim or get it trimmed less than one fist. Its detail is available in Fatawa Shami, Kitab al-Sawm. Ikhtilaf-e-Ummat and Sirat-e-Mustaqeem speaks about it in great detail and the summary is what we have written above. The person who shaves his beard or keeps it less than one fist he is fasiq (transgressor).
(3) The adhan of a fasiq is makrooh though it shall not be repeated if he delivers it.
ويكره اذان الفاسق ولا يعاد هكذا فى الذخيرة اهـ الفتاوى الهنديه ج 1 ص 54.
Allah knows Best!
Darul Uloom Deoband