Who was the first wife of Prophet Muhammad (PBUH) and provided immense support, both moral and financial, during the early and most challenging phase of his prophethood?

Explanation

Khadijah bint Khuwaylid (RA) was the first wife of Prophet Muhammad (PBUH) and his greatest supporter. She comforted him during his initial revelations, believed in him instantly, and sacrificed her wealth for the cause of Islam.