Tablet of Ahmad — Paragraph 11
Source (Arabic)
وَإِنْ يَمَسَّكَ ٱلْحُزْنُ فِي سَبِيلِي أَوِ ٱلْذِّلَّةُ لِأَجْلِ ٱسْمِي لَا تَضْطَرِبْ
Translation
And if thou art overtaken by affliction in My path, or degradation for My sake, be not thou troubled thereby.