Are the monies or gifts that a husband receives from contractors after a tender is awarded considered a permissible gift or a forbidden bribe, and must they be handed over to the office even if they were given to him outside the scope of work or were in kind and not monetary?

The questioner's husband is not permitted to accept gifts offered to him because of his work, even if he did not request them, because gifts to employees are considered unlawful gains (ghulul), unless the employer authorizes it. He must return whatever material or other gifts he received outside the office to the employer, unless the employer permits him to keep them.