Is it advisable to work at Al-Rajhi Bank despite the doubts about its foreign investments, or at Bank Albilad, or to leave banking altogether? And if a job opportunity arises at Al-Rajhi Bank and another at a company that deals with usury but in a permissible accounting role, which is better Islamically? And is it better to accept a loan or a gift from one's father (who does not refrain from unlawful earnings and does not consider bank interest usury) to start life; which of the two is further from religious doubt?

We cannot rule on working at Al-Rajhi Bank due to our lack of knowledge about it. You can ascertain the reality of its dealings by asking scholars in the Kingdom. As for working in a mixed company, if your field of work is independent and unrelated to what is unlawful, then there is no harm in it. The best option is to borrow from your father a Qard Hasan (a benevolent loan). As for accepting a gift from him, if your father gives all your siblings similar gifts, then it is good. Otherwise, do not take it, as that would be assisting your father in something not permissible, according to the hadith of Nu'man ibn Bashir in the two Sahihs.