Does the manner of praying upon the Prophet, "O Allah, send Your prayers and peace upon you, O Messenger of Allah," have an effect on expediting marriage, does it have a specific duration, and is concentration required when reciting it?

Praying upon the Prophet, peace and blessings be upon him, is a means of relieving worries and fulfilling all needs. However, specifying it for facilitating marriage has no specific scriptural text, but rather falls under the general category of needs. Designating a specific number or amount for this prayer is an additional innovation (bid'ah). The best form of it is the Ibrahimiyyah prayer, and one should avoid forms with corrupt linguistic structures such as: "O Allah, send peace and blessings upon You, O Messenger of Allah." The presence of the heart in remembrance magnifies the reward and brings about the desired effect.