Shaykh Saalih Al-Fawzaan was asked:

Question:

Is it permissible to name using the name al-Haadi (الهادي )?

Answer:

“Abdul-Haadi, this is well known. Abdul-Haadi. The name (الهادي ) alone is [only for] Allah. Yes”.

[Reference]

Translated by

Faisal bin Abdul Qaadir bin Hassan
Abu Sulaymaan