What is the ruling on supplicating with the singular name "O Lord" only, and what is the refutation against those who cite the hadith of the traveler as evidence for its permissibility?

Mentioning Allah by a singular name, such as "Allah, Allah" or "Ya Latif, Ya Latif," has no basis in the Quran, Sunnah, or the sayings of the Companions.

What is prescribed is to remember Allah with complete phrases, such as "Subhan Allah" (Glory be to Allah) and "Alhamdulillah" (Praise be to Allah), and to supplicate to Him by asking for benefit and seeking protection from harm.

The hadith "Ya Rabb, Ya Rabb" (O Lord, O Lord) does not indicate the permissibility of singular remembrance; rather, it describes the state of a supplicant who is persistent in making many supplications, as explained by scholars.

The supplications of the Prophets were always in complete phrases, never using a singular name.