What is the ruling on buying children's clothes that contain images of animals and humans, and what is the ruling on a woman riding with her sister's husband accompanied by her sister, or with her husband's brother accompanied by his mother?

It is forbidden to wear clothes that contain pictures, for adults and children, male or female. As for a woman riding with a non-mahram man, if she is alone with him, it is a forbidden seclusion (khalwa) based on the Prophet's (PBUH) saying: "No man is alone with a woman but the third of them is Satan." If she is with a group of women, it is permissible under two conditions: that the man is trustworthy, and that it is not during travel, as it is forbidden for a woman to travel without a mahram. It is permissible for a woman to ride with her sister's husband accompanied by her sister, and with her husband's brother accompanied by his mother, if there is no fear of temptation.