Excuses for Farts

Ulrich Marzolph and Richard van Leeuwen, The Arabian Nights Encyclopedia, Vol. 1 (Santa Barbara: ABC-CLIO, 2004), p. 150:

Jokes about untimely or unfortunate farts constitute a distinct category in classical Arabic jocular literature. Besides the phenomenon of the "adopted fart (Arabia ridens 2: nos. 151, 433), a frequently imagined situation has the petitioner fart while addressing the ruler with a request. Various responses follow: Each and every opening of my body praises you! (addressing the ruler); You be quiet while the mouth talks! (addressing his buttocks) (Arabia ridens 2: no. 616); And this is another unfortunate thing that happened to me lately! (addressing the ruler) (Arabia ridens 2: no. 918).

The references are to Ulrich Marzolph, Arabia Ridens, 2 vols. (Frankfurt am Main: Klostermann, 1992), which I haven't seen.