Alsalamu Alaykom, It is known that each prophet was sent to his people except prophet Mohammed PBUH. Is it possible to have more than one prophet sent at a particular time. If this is the case, are the people following one prophet required to follow the teachings of the other prophet if they meet each other(during the same period of time)? Thank you

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.

In previous nations, many Prophets were sent at the same time. Allaah sent a Prophet for every people from amongst them in order to address them in their own language. Therefore, each people were obliged to believe in the Prophet who was sent to them. Allaah has sent more than one Prophet town with the same message to the same as was the case with the city of Antakya. Allaah Says (what means): {And present to them an example: the people of the city, when the messengers came to it — When We sent to them two but they denied them, so We strengthened them with a third, and they said, “Indeed, we are messengers to you.”}[Quran 36:13-14]

As regards your question “Are the people following one Prophet obliged to follow the teachings of another Prophet?”, then there is no benefit in such a question. All the Messages of the Prophets were the same in general and they did not contradict each other in regard to the principles of religion. All the Messages were about calling people to the Oneness of Allaah and shunning Shirk (i.e. associating partners with Allaah).

Allaah Knows best.