Hafiz Muhammad Ameen
1991. Commentary:
➊ The narrator of the hadith, Abu Umamah radi Allahu anhu, is a well-known Companion of the Messenger, but he is not Abu Umamah Bahili; rather, he is another Companion who is also known by this kunyah. He was granted the honor of seeing the Messenger of Allah sallallahu alayhi wa sallam, although he did not directly hear any hadith from the Messenger of Allah sallallahu alayhi wa sallam. This narration too, he received through another Companion, but he reported it without mentioning the intermediary. According to the hadith scholars, this is called a "mursal sahabi" (a Companion's mursal narration), and it is considered authoritative. It is given the same ruling as a marfu‘ (attributed directly to the Prophet) narration. For further details, see: (Ta‘liq Ahkam al-Jana’iz by al-Albani, p. 141).
➋ "Recite Surah al-Fatihah quietly"—whereas in the previous hadith number 1989, recitation aloud is explicitly mentioned. Therefore, both ways are permissible: one may recite quietly or aloud.
➌ "Then say three takbirs"—the narration is concise, meaning the three takbirs are not to be said together, but rather, all together they will be three, i.e., said separately. After the second takbir, send blessings (salat) upon the Prophet, after the third, supplicate (make du‘a), and after the fourth, say the salam, as has already been detailed in hadith 1985, benefit 4.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 1991