The Prophet ﷺ said: When a man comes to visit a sick person, he should say: O Allah, cure Thy servant, who may then wreak havoc on an enemy for your sake, or walk at a funeral for your sake. Abu Dawud said: Ibn As-Sarh (one of the narrators) said: "Ilas-salat (To the Salat)". (Using translation from Abū Dāʾūd 3107)
"إذَا جَاءَ الرّجُلُ يُعُودُ مريضًا فليَقلْ: اللَّهُمَّ اشْفِ عَبْدَكَ فُلانًا؛ يَنْكأُ لك عَدُوًا أوْ يَمْشِي لَكَ إِلى جنَازَةٍ ".