To hurt the Companions is to hurt the Holy Prophet (Sallallahu alaihi wa sallam)
The Holy Prophet (Sallallahu alaihi wa sallam) has emphasized respect of His Family and along with them of the Companions that Allah Most High should be feared about them, as given in Jame’ Tirmidhi:
Translation: It has been narrated on the authority of Hadhrat Abdullah bin Mughaffal (May Allah be well pleased with him) that the Holy Prophet (Sallallahu alaihi wa sallam) said: Fear Allah about my Companions. Fear Allah. Do not make them the target of your condemnation after me. Whoever loves them, loves them out of love for me. Whoever hates them, hates them out of his hate for me. Whoever hurts them, hurts me and whoever hurts me, hurts Allah and whoever hurts Allah, He will hold him to account very soon. (Jame’ Tirmidhi, Vol. 2, Pg. No. 225).