It is narrated from Hazrat Anas (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: If the Day of Judgment is established upon one of you while he has a date-palm sapling in his hand, then even if possible, he should plant it.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 12981