The scholars’ disagreement regarding unconnected public interests, and the clarification that if the imam shortens the prayer while traveling, his closing salam is to be done quietly, which falls under this category.

The Shaykh : And I know that the scholars have differed on this issue, with some affirming it and others leaving it. If the questioner shares our view regarding unconnected public interests, and the detailed explanation given by the Shaykh al-Islam Ibn Taymiyyah (may Allah have mercy on him) in his noble book, *Iqtida' al-Sirat al-Mustaqim Mukhalafat Ahl al-Jahim* (The Straight Path Demanding Opposition to the People of the Hellfire), then we will meet on a common word: that this is valid, and that it contradicts the alleged general texts, but the public interest necessitates not conveying or making audible the salam in order to prevent exposing the prayer of the resident followers to invalidity.
Ibn Taymiyyah (may Allah have mercy on him): I have seen from him a statement in this area that every student of knowledge should know so as not to fall into excess or deficiency. Whoever does not know this principle, as explained and clarified by Ibn Taymiyyah (may Allah have mercy on him), falls into exaggeration in denying everything that occurred after the Prophet (peace and blessings be upon him), relying on the general evidence that condemns every religious innovation.