Samurah bin Jundub said “The war-cry of the Emigrants was Abdullah and that of the helpers Abd Al Rahman. ”
Hadith Referenceسنن ابي داود / كتاب الجهاد / 2595
Hadith Gradingالألبانی:ضعيف | زبیر علی زئی:ضعيف, إسناده ضعيف, حجاج بن أرطاة ضعيف،مدلس, انوار الصحيفه، صفحه نمبر 95
Hadith Takhrij« تفرد بہ أبو داود، (تحفة الأشراف: 4601) (حسن بصری مدلس ہیں اور روایت ’’عنعنہ ‘‘ سے ہے ) (ضعیف) »
Brief Explanation
1؎: The specific word by which a guard or soldier is informed for mutual identification among themselves, so that during battle they are not deceived, is called "pardal."
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues: The benefit of this is that in darkness or in the case of not having personal acquaintance, there is no mistake in recognizing one's own people. If a spy or the like infiltrates, it also becomes easier to catch him.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 2595