BJP MP Shatrughna Sinha today ruled out the possibility of his joining JD(U) and said his meeting with Bihar Chief Minister Nitish Kumar yesterday was mere a courtesy. Mr. Sinha said nobody knows what will happen tomorrow. He said he could not think of causing any damage to BJP which has given him immense love and respect. Mr. Sinha said he is not in the race for Bihar Chief Ministership. He said he will discharge duty as per party's instruction.