There is no doubt that the Holy Qur'an has acknowledged intercession and tawassul between Allah and His people, and not prohibited that nor prevented His messenger from it. Rather, the Qur'an has made it permissible and recommended it.
The Qur'an has made the Prophet’s deeds, sayings, and approving of others’ deeds an example for us to follow in our lives, when saying:
Certainly you have in the Messenger of Allah (S) an excellent exemplar. Qur'an, 33:21
On this basis, we will take the Prophet’s doings and sayings as our evidence. We shall not derive our evidence from the books of the Shia nor from any of the books of the Sunni, for that shall be uncountable. We shall be satisfied with what al-Bukhari has mentioned in his Sahih alone, so that the answer to the Wahabis shall be by the knockout that they may not argue with it, if they are fair. Otherwise, their obstinacy and blind fanaticism shall expose them to all Muslims.
After we have proved the permissibility of tawassul from the Qur'an and the Prophetic Sunna, we discuss what to the Wahabis is more defamed and more deniable than tawassul; it is the asking the blessing of and wiping one’s body against holy shrines and sacred places.
The Wahabis have reached an extent that they beat the hajjis for doing so and accuse them of polytheism.