While the date was yet to be finalised, the Congress sources indicated that the Gandhi scion could collect the certificate between December 14 and 16.
The 47-year-old Amethi MP, who has been the Congress vice president for nearly five years, is the sole contender for the top party post.
Backed by the entire rank and file of the party, he had filed his nomination for the Congress president's post three days ago.
"It is going to be a grand affair at the AICC headquarters next week. Soniaji is expected to accompany him (Rahul Gandhi), besides other senior leaders of the party. PCC leaders from various states are also likely to be there," a source said.
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