'Bismillah ar-Rahman ar-Rahim'?

Question:
Is the Tasmiyyah (mentioning the Name ofAllaah) upon the food that a
person says: 'Bismillaah' or that he says: 'Bismillaah ar-Rahmaan
ar-Raheem'?
Answer:
Allaah's Aid is sought! If you said 'Bismillaah' it is sufficient, and
if you said 'Bismillaah ar-Rahmaan ar-Raheem' then that is not a
problem, because the Prophet sallAllaahu 'alayhi wa sallam said: "O
young boy mention the Name of Allaah"[1], and he did not say: 'do not
say ar-Rahmaan ar-Raheem'. So if you said 'Bismillaah' it is
sufficient, and if you said 'Bismillaah ar-Rahmaan ar-Raheem' then
that is not a problem. The Sharee'ah has within it, in a lot of the
affairs scope for leeway. The people were with the Messenger of Allaah
sallAllaahu 'alayhi wa sallam on the farewell Hajj, some of them were
pronouncing the Talbiyyah and some of them were pronouncing the
Takbeer, and he did not say to the one making Takbeer 'do not make
Takbeer', or to the one making the Talbiyyah 'do not make the
Talbiyyah'. And this affair is expansive. Ibn 'Umar may Allaah be
pleased with him, was from the most ardent of people upon following
the Sunnah, and (even) with this he expanded upon the Talbiyyah and he
said:
(Labbayk Allahumma Labbayk, Labbayka La Shareeka Laka Labbayk, Inna
al-Hamda wa an-Ni`mata Laka wa al-Mulk La Shareeka Lak,
Labbayka wa Sa`dayk, wa al-Khayr fi Yadayk wa ar-Raghbaa Ilayka wa al-`Amal)
And none from amongst the Companions forbade him from that, from
whatwe know. Because the affair (here) is expansive,except for the one
who supplicates with a supplication that is not pertinent, or
supplicates with something that is Haraam, so that is
refutedregardless.
________________________
[1] Reported by al-Bukhaari (nos. 5376, 5377) in the Book of Foods and
Muslim (no.2022) in the Book of Drinks.
Shaykh Muhammad bin Saalih al-`Uthaymeen
Liqaa'at al-Baabil-Maftooh, vol.3, P.523.
Translated by Abu Maryam Taariq bin 'Ali