Promised Messiah AS: Intercession (Tawasul) of Rasulullah ﷺ is allowed
Introduction
Although Promised Messiah AS was against istigatha, he was not against Tawassul(intercession through the Prophet ﷺ). This is the view of the Ahlul Hadith as well
Tawasul is permissible
Quote # 1
Promised Messiah AS states:
إني أتوسل إليك بنبيك خاتم النبيين
I beg to you (Allah) through your Prophet ﷺ, the seal of Prophets
[Ruhani Khazain Vol.5 page 22]
Quote # 2
O my Lord, by virtue of the host of Prophets, Whom You sent with Your abundant grace
Grant me wisdom, as You have granted me a yearning heart; Grant me wine, as You have granted me
the gobletO my Lord God, for the sake of Mustafa [the Chosen One] Whom You supported at every step
Hold my hand with Your grace and compassion,And be my friend and helper in all my affairs.
I put all my trust in Your power, Even though I am like dust, or humbler still.
Barhin-e-Ahmadiyya Volume 1-2, pg. 44-45