Legolas carries Gimli away

Aragorn picked up Frodo where he lay by the wall and made for the stair, pushing Merry and Pippin in front of him. The others followed; but Gimli had to be dragged away by Legolas: in spite of the peril he lingered by Balin’s tomb with his head bowed. Boromir hauled the eastern door to, grinding upon its hinges: it had great iron rings on either side, but could not be fastened.

‘I am all right,’ gasped Frodo. ‘I can walk. Put me down!’

Aragorn nearly dropped him in his amazement. ‘I thought you were dead!’ he cried.

‘Not yet!’ said Gandalf. ‘But there is no time for wonder. Off you go, all of you, down the stairs! Wait a few minutes for me at the bottom, but if I do not come soon, go on! Go quickly and choose paths leading right and downwards.’

‘We cannot leave you to hold the door alone!’ said Aragorn.

‘Do as I say!’ said Gandalf fiercely. ‘Swords are no more use here. Go!’

The Fellowship of the Ring, Book Two, Chapter 5: The Bridge of Khazad-dûm.