BTS could stand for:
B - Barakah (بَرَكَة) meaning blessings or divine favor
T - Taqwa (تَقْوَى) meaning piety or righteousness
S - Sabr (صَبْر) meaning patience or perseverance
So, BTS would represent the qualities of seeking blessings, living a righteous life, and practicing patience and perseverance, all of which are highly valued in Islam.