'Nard' in the Bible

Now while Jesus was in Bethany at the house of Simon the leper, reclining at the table, a woman came with an alabaster jar of costly aromatic oil from pure nard. After breaking open the jar, she poured it on his head.

Then Mary took three quarters of a pound of expensive aromatic oil from pure nard and anointed the feet of Jesus. She then wiped his feet dry with her hair. (Now the house was filled with the fragrance of the perfumed oil.)