Is 'Umar's statement, "O Allah, we used to seek nearness to You through our Prophet when we were afflicted with drought," not an oath by Allah using a created being?

Question:
He says: Is 'Umar's statement, "O Allah, when we faced drought, we sought nearness to You through our Prophet," not an oath by Allah using a created being, such that the preposition "ba" is the preposition of an oath?

Answer:
That is to say, you have not understood our words from the beginning of the lesson until now. We say that this is not tawassul (seeking nearness to Allah through a means) through the created being itself, but tawassul through supplication. The evidence is that 'Umar said, "Rise, O 'Abbas, and supplicate. Rise, O 'Abbas, and supplicate." This is tawassul through the supplication of the created being, not through the created being itself, because he said, "Supplicate." Yes.