IIRC the Buddha said it was like carrying the oar of a boat: once you have used it to get you to your destination (nibbhana), carrying it is needless.
> सेय्यथापि भिक्खवे पुरिसो महतो उदकस्स ओरिमतटे ठितो एतस्मिं चत्ते ओरिमा तटा कल्लंणं भयंवरं, परमा तटा निब्बयं भयंविरं, न च नावाय संयताय न च पुल्लेन गन्तब्बं। तं किमन्तरेन। यन्नुनाहं तिणकट्ठपण्णं संकलिय च मज्झे उदकं अभिनवेन्तं हत्थिपदेन व अङ्गपदेन व तीरणं करोमि। अथ खो सो पुरिसो तिणकट्ठपण्णं संकलिय च मज्झे उदकं अभिनवेन्तो हत्थिपदेन व अङ्गपदेन व तीरणं करोति। तं पच्छा समन्ततो गन्त्वा पारे गच्छति। तं एं लोको किं नु खो करिस्सति कूल्हिरेन पारा गतो ती? एवमेव खो भिक्खवे धम्मो देशितो अजानासि। पारं गमनेन धम्मं नुपगम्म धम्मं।
Alagaddūpama Sutta (MN 22) of the Majjhima Nikāya, part of the Pali Canon.
(MN 22, सेय्यथापि... से अंतまで)
荃者所以在魚，得魚而忘荃 蹄者所以在兔，得兔而忘蹄 言者所以在意，得意而忘言 吾安得忘言之人而與之言哉？
The fish trap exists because of the fish; once you've gotten the fish, you can forget the trap. The rabbit snare exists because of the rabbit; once you've gotten the rabbit, you can forget the snare. Words exist because of meaning; once you've gotten the meaning, you can forget the words. Where can I find a man who has forgotten words so I can have a word with him?