Is the testimony of a lawyer and a ma’dhūn valid in a marriage contract, and does the involvement of a lawyer in the contract affect its validity?

Scholars have differed regarding the ruling on marriage without a guardian (wali). The majority holds that it is invalid, contrary to Abu Hanifa's view. The preponderant opinion for us is that of the majority. However, if the contract is concluded in imitation of Abu Hanifa's school of thought, then it is enforced. The Hanafis stipulate the testimony of two just witnesses, provided that the officiant is not one of them. If the officiant (ma'dhun) is merely a reciter and not the one concluding the contract, then his testimony is acceptable, as is the testimony of a lawyer if he meets the conditions for testimony. His act of writing the contract does not invalidate it, and thus the marriage is valid.